Jeff B. Boisvert

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Geostatistical algorithms that consider multiple-point statistics are becoming increasingly popular. These methods allow for the reproduction of complicated features beyond the commonly implemented two-point statistic: the covariance or semivariogram. In practice, it is not possible to infer many multiple-point statistics directly from the available data;(More)
Fracture models of vein formation can produce realistic training images (TIs) for use in multiple-point geostatistics. Vein formation is modeled by applying flow simulation to a fracture model to mimic the flow of an ore-bearing fluid through fractured rock. TIs are generated by assuming that veins form in areas of high flow where there would be(More)
The authors provide an anatomic and ultrasonographic description of the fetal brain from the 16th to the 27th week of development. During the second trimester the primitive brain is smooth and homogeneous and has few sulci and relatively large lateral ventricles. The cerebral hemispheres consist largely of cells migrating from the periventricular germinal(More)
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